Another one that I never finished as a kid. I think that I was turned off by how the jump doesn't have the same physics as the NES games. Considering how key the jump is to Mario games, that's a big problem. It's not all bad: the fireball is pleasantly overpowered and puts the game on easy mode, but it's relatively balanced in how easy it is to lose. The two wall-scrolling shoot-em-up levels are fun, the music wrings some tunes out of the GB sound chip, and the boss gimmicks are okay.